What order is the periodic table arranged? The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency. […]
Which properties do all metalloids share?
Which properties do all metalloids share? Metalloids may act either like metals or nonmetals in chemical reactions. Most metalloids have some physical properties of metals and some physical properties of nonmetals. They fall between metals and nonmetals in their ability to conduct heat and electricity. They are shiny like metals, but brittle like nonmetals. What […]
What rules are applied in balancing equations?
What rules are applied in balancing equations? Balancing Chemical Equations Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Use coefficients of products and reactants to balance the number of atoms of an element on both sides of a chemical equation. What 4 guidelines […]
Which country in the Middle East has the smallest population?
Which country in the Middle East has the smallest population? The five least populous countries of the Middle East are: Bahrain: 1,346,613. Qatar: 2,194,817. Kuwait: 2,788,534. Oman: 3,286,936. Lebanon: 6,184,701. Is the Middle East overpopulated? The Middle East has a population of about 246 million, or nearly as many people as the United States. The […]
What is the physical property of temperature?
What is the physical property of temperature? Temperature tells us how much kinetic (thermal) energy the particles of the material have and is measured in units of degrees Celsius or Kelvin. A thermometer has a liquid in a very narrow tube, which when heated will expand and move up the tube. Is it safe to […]
What does temperature change mean?
What does temperature change mean? Noun. 1. temperature change – a process whereby the degree of hotness of a body (or medium) changes. advection – (meteorology) the horizontal transfer of heat or other atmospheric properties. climate change, global climate change – a change in the world’s climate. How does temperature change happen? The Earth’s surface […]
What are 3 reasons for the seasons?
What are 3 reasons for the seasons? The reasons for the Earth experiencing seasons are revolution, rotation, tilt, axial parallelism, and sphericity – yikes! and I thought it had only to do with the tilt of the Earth! Let’s first look at revolution, which is Earth’s orbit around the sun. What are the 3 reasons […]
What are the symptoms of low fever?
What are the symptoms of low fever? Signs and Symptoms of Low-Grade Fever Warm skin. A flushed face. Glassy eyes. Chills or Shivering. Sweating. Headache. Muscle Aches. What does a low-grade fever indicate? A fever is when a person’s body temperature is higher than normal. For most people, normal is roughly 98.6° Fahrenheit (37° Celsius). […]
What happens when you mix sulfur and chlorine?
What happens when you mix sulfur and chlorine? If a stream of chlorine is passed over some heated sulphur, it reacts to form an orange, evil-smelling liquid, disulphur dichloride, S2Cl2. Is sulfur dichloride toxic? Chemical dangers This produces toxic and corrosive fumes including hydrogen chloride and sulfur oxides. Reacts violently with strong oxidants, acetone and […]
Did 1910 houses have electricity?
Did 1910 houses have electricity? By 1910, many suburban homes had been wired up with power and new electric gadgets were being patented with fervor. Vacuum cleaners and washing machines had just become commercially available, though were still too expensive for many middle-class families. Chemistry also charged full steam ahead in 1910. When was electricity […]